7
V.
CONDITIONS THAT AFFECT USE
A. Ambient
Temperature
Ambient temperature changes will affect the light absorption characteristics of the FingerSim™, resulting in the
simulated SpO
2
value changing slightly with ambient temperature. Each FingerSim™ is calibrated at 72.5°F.
If the ambient temperature is between 67.5°F and 77.5°F no modification in the expected simulation is
necessary. However, if the ambient temperature is outside this range Figures 6, 7 and 8 should be used to
modify the expected simulated SpO
2
value. For example, if the 80% FingerSim™ was being used at 90°F
ambient temperature then the expected simulation would be increased to 83%.
74
75
76
77
78
79
80
81
82
83
84
85
86
40
45
50
55
60
65
70
75
80
85
90
95
100
Temperature
°
F
Simulated SpO
2
change with Ambient Temperature 80% FingerSim™
Figure 6. 80% SpO
2
Temperature Dependence
93
94
95
96
97
98
99
40
45
50
55
60
65
70
75
80
85
90
95
100
Temperature
°
F
Simulated SpO
2
change with Ambient Temperature 97% FingerSim™
Figure 8. 97% SpO
2
Temperature Dependence
84
85
86
87
88
89
90
91
92
93
94
95
40
45
50
55
60
65
70
75
80
85
90
95
100
Temperature
°
F
Simulated SpO
2
change with Ambient Temperature 90% FingerSim™
Figure 7. 90% SpO
2
Temperature Dependence
